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MAX2605：45MHz to 650MHz, Integrated IF VCOs with Differential Output

The MAX2605-MAX2609 are compact, high-performance intermediate-frequency (IF) voltage-controlled oscillators (VCOs) designed specifically for demanding portable wireless communication systems. They combine monolithic construction with low-noise, low-power operation in a tiny 6-pin SOT23 package. These low-noise VCOs feature an on-chip varactor and feedback capacitors that eliminate the need for external tuning elements, making the MAX2605-MAX2609 ideal for portable systems. Only an external inductor is required to set the oscillation frequency. In addition, an integrated differential output buffer is provided for driving a mixer or prescaler. The buffer output is capable of supplying up to -8dBm (differential) with a simple power match. It also provides isolation from load impedance variations. The MAX2605-MAX2609 operate from a single +2.7V to +5.5V supply and offer low current consumption. These IF oscillators can cover the 45MHz to 650MHz frequency range.

Key Features Small Size Integrated Varactor for Tuning Low Phase Noise Wide Application Frequency Range Differential or Single-Ended Outputs Single +2.7V to +5.5V Supply Ultra-Small SOT23-6 Package On-Chip Temperature-Stable Bias Low-Current Operation

MAX2605, MAX2606, MAX2607, MAX2608, MAX2609: Typical Operating Circuit Applications/Uses 2.4GHz ISM Band 902MHz to 928MHz ISM Band Cellular and PCS Mobile Phones General-Purpose IF Oscillators GPS Receivers Land Mobile Radios

DataSheet

Parametrics

Design kits & evaluation modules

• MAX2605EVKIT
• MAX2606EVKIT
• MAX2607EVKIT
• MAX2608EVKIT
• MAX2609EVKIT

Quality and Environmental Data

• MAX2605.pdf

Ordering Information